* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#define EXPORT_SYMTAB
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
#define DEBUG_SUBSYSTEM S_MDS
+#include <linux/version.h>
#include <linux/module.h>
-#include <linux/lustre_mds.h>
-#include <linux/lustre_dlm.h>
#include <linux/init.h>
-#include <linux/obd_class.h>
-#include <linux/random.h>
+#include <linux/version.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
# include <linux/buffer_head.h>
# include <linux/workqueue.h>
#else
# include <linux/locks.h>
#endif
-#include <linux/obd_lov.h>
+
+#include <linux/obd_class.h>
#include <linux/lustre_mds.h>
+#include <linux/obd_lov.h>
#include <linux/lustre_fsfilt.h>
#include <linux/lprocfs_status.h>
#include "mds_internal.h"
-struct mds_file_data *mds_dentry_open(struct dentry *dentry,
- struct vfsmount *mnt,
- int flags,
- struct ptlrpc_request *req)
+/* Exported function from this file are:
+ *
+ * mds_open - called by the intent handler
+ * mds_close - an rpc handling function
+ * mds_pin - an rpc handling function - which will go away
+ * mds_mfd_close - for force closing files when a client dies
+ */
+
+/*
+ * MDS file data handling: file data holds a handle for a file opened
+ * by a client.
+ */
+
+static void mds_mfd_addref(void *mfdp)
+{
+ struct mds_file_data *mfd = mfdp;
+
+ atomic_inc(&mfd->mfd_refcount);
+ CDEBUG(D_INFO, "GETting mfd %p : new refcount %d\n", mfd,
+ atomic_read(&mfd->mfd_refcount));
+}
+
+struct mds_file_data *mds_mfd_new(void)
+{
+ struct mds_file_data *mfd;
+
+ OBD_ALLOC(mfd, sizeof *mfd);
+ if (mfd == NULL) {
+ CERROR("mds: out of memory\n");
+ return NULL;
+ }
+
+ atomic_set(&mfd->mfd_refcount, 2);
+
+ INIT_LIST_HEAD(&mfd->mfd_handle.h_link);
+ class_handle_hash(&mfd->mfd_handle, mds_mfd_addref);
+
+ return mfd;
+}
+
+static struct mds_file_data *mds_handle2mfd(struct lustre_handle *handle)
+{
+ ENTRY;
+ LASSERT(handle != NULL);
+ RETURN(class_handle2object(handle->cookie));
+}
+
+static void mds_mfd_put(struct mds_file_data *mfd)
+{
+ CDEBUG(D_INFO, "PUTting mfd %p : new refcount %d\n", mfd,
+ atomic_read(&mfd->mfd_refcount) - 1);
+ LASSERT(atomic_read(&mfd->mfd_refcount) > 0 &&
+ atomic_read(&mfd->mfd_refcount) < 0x5a5a);
+ if (atomic_dec_and_test(&mfd->mfd_refcount)) {
+ LASSERT(list_empty(&mfd->mfd_handle.h_link));
+ OBD_FREE(mfd, sizeof *mfd);
+ }
+}
+
+static void mds_mfd_destroy(struct mds_file_data *mfd)
+{
+ class_handle_unhash(&mfd->mfd_handle);
+ mds_mfd_put(mfd);
+}
+
+
+/* Caller must hold mds->mds_epoch_sem */
+static int mds_alloc_filterdata(struct inode *inode)
+{
+ LASSERT(inode->i_filterdata == NULL);
+ OBD_ALLOC(inode->i_filterdata, sizeof(struct mds_filter_data));
+ if (inode->i_filterdata == NULL)
+ return -ENOMEM;
+ LASSERT(igrab(inode) == inode);
+ return 0;
+}
+
+/* Caller must hold mds->mds_epoch_sem */
+static void mds_free_filterdata(struct inode *inode)
+{
+ LASSERT(inode->i_filterdata != NULL);
+ OBD_FREE(inode->i_filterdata, sizeof(struct mds_filter_data));
+ inode->i_filterdata = NULL;
+ iput(inode);
+}
+
+/* Write access to a file: executors cause a negative count,
+ * writers a positive count. The semaphore is needed to perform
+ * a check for the sign and then increment or decrement atomically.
+ *
+ * This code is closely tied to the allocation of the d_fsdata and the
+ * MDS epoch, so we use the same semaphore for the whole lot.
+ *
+ * We could use a different semaphore for each file, if it ever shows
+ * up in a profile, which it won't.
+ *
+ * epoch argument is nonzero during recovery */
+static int mds_get_write_access(struct mds_obd *mds, struct inode *inode,
+ __u64 epoch)
+{
+ int rc = 0;
+
+ down(&mds->mds_epoch_sem);
+
+ if (atomic_read(&inode->i_writecount) < 0) {
+ up(&mds->mds_epoch_sem);
+ RETURN(-ETXTBSY);
+ }
+
+
+ if (MDS_FILTERDATA(inode) && MDS_FILTERDATA(inode)->io_epoch != 0) {
+ CDEBUG(D_INODE, "continuing MDS epoch "LPU64" for ino %lu/%u\n",
+ MDS_FILTERDATA(inode)->io_epoch, inode->i_ino,
+ inode->i_generation);
+ goto out;
+ }
+
+ if (inode->i_filterdata == NULL)
+ mds_alloc_filterdata(inode);
+ if (inode->i_filterdata == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ if (epoch > mds->mds_io_epoch)
+ mds->mds_io_epoch = epoch;
+ else
+ mds->mds_io_epoch++;
+ MDS_FILTERDATA(inode)->io_epoch = mds->mds_io_epoch;
+ CDEBUG(D_INODE, "starting MDS epoch "LPU64" for ino %lu/%u\n",
+ mds->mds_io_epoch, inode->i_ino, inode->i_generation);
+ out:
+ if (rc == 0)
+ atomic_inc(&inode->i_writecount);
+ up(&mds->mds_epoch_sem);
+ return rc;
+}
+
+/* Returns EAGAIN if the client needs to get size and/or cookies and close
+ * again -- which is never true if the file is about to be unlinked. Otherwise
+ * returns the number of remaining writers. */
+static int mds_put_write_access(struct mds_obd *mds, struct inode *inode,
+ struct mds_body *body, int unlinking)
+{
+ int rc = 0;
+ ENTRY;
+
+ down(&mds->mds_epoch_sem);
+ atomic_dec(&inode->i_writecount);
+ rc = atomic_read(&inode->i_writecount);
+ if (rc > 0)
+ GOTO(out, rc);
+#if 0
+ if (!unlinking && !(body->valid & OBD_MD_FLSIZE))
+ GOTO(out, rc = EAGAIN);
+#endif
+ mds_free_filterdata(inode);
+ out:
+ up(&mds->mds_epoch_sem);
+ return rc;
+}
+
+static int mds_deny_write_access(struct mds_obd *mds, struct inode *inode)
+{
+ ENTRY;
+ down(&mds->mds_epoch_sem);
+ if (atomic_read(&inode->i_writecount) > 0) {
+ up(&mds->mds_epoch_sem);
+ RETURN(-ETXTBSY);
+ }
+ atomic_dec(&inode->i_writecount);
+ up(&mds->mds_epoch_sem);
+ RETURN(0);
+}
+
+static void mds_allow_write_access(struct inode *inode)
+{
+ ENTRY;
+ atomic_inc(&inode->i_writecount);
+}
+
+int mds_query_write_access(struct inode *inode)
+{
+ ENTRY;
+ RETURN(atomic_read(&inode->i_writecount));
+}
+
+/* This replaces the VFS mds_dentry_open, it manages mfd and writecount */
+static struct mds_file_data *mds_dentry_open(struct dentry *dentry,
+ struct vfsmount *mnt, int flags,
+ struct ptlrpc_request *req)
{
struct mds_export_data *med = &req->rq_export->exp_mds_data;
- struct inode *inode;
+ struct mds_obd *mds = mds_req2mds(req);
struct mds_file_data *mfd;
- int mode, error;
+ struct mds_body *body;
+ int error;
+ ENTRY;
mfd = mds_mfd_new();
if (mfd == NULL) {
GOTO(cleanup_dentry, error = -ENOMEM);
}
- mode = (flags + 1) & O_ACCMODE;
- inode = dentry->d_inode;
+ body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
- if (mode & FMODE_WRITE) {
- error = get_write_access(inode);
+ if (flags & FMODE_WRITE) {
+ /* FIXME: in recovery, need to pass old epoch here */
+ error = mds_get_write_access(mds, dentry->d_inode, 0);
if (error)
- goto cleanup_mfd;
+ GOTO(cleanup_mfd, error);
+ body->io_epoch = MDS_FILTERDATA(dentry->d_inode)->io_epoch;
+ } else if (flags & FMODE_EXEC) {
+ error = mds_deny_write_access(mds, dentry->d_inode);
+ if (error)
+ GOTO(cleanup_mfd, error);
}
- mfd->mfd_mode = mode;
+ dget(dentry);
+
+ /* Mark the file as open to handle open-unlink. */
+ mds_open_orphan_inc(dentry->d_inode);
+
+ mfd->mfd_mode = flags;
mfd->mfd_dentry = dentry;
mfd->mfd_xid = req->rq_xid;
list_add(&mfd->mfd_list, &med->med_open_head);
spin_unlock(&med->med_open_lock);
mds_mfd_put(mfd);
- return mfd;
+
+ body->handle.cookie = mfd->mfd_handle.h_cookie;
+
+ RETURN(mfd);
cleanup_mfd:
mds_mfd_put(mfd);
mds_mfd_destroy(mfd);
cleanup_dentry:
- dput(dentry);
- mntput(mnt);
return ERR_PTR(error);
}
-void reconstruct_open(struct mds_update_record *rec, int offset,
- struct ptlrpc_request *req,
- struct lustre_handle *child_lockh)
+static void mds_objids_from_lmm(obd_id *ids, struct lov_mds_md *lmm,
+ struct lov_desc *desc)
+{
+ int i;
+ for (i = 0; i < le32_to_cpu(lmm->lmm_stripe_count); i++) {
+ ids[le32_to_cpu(lmm->lmm_objects[i].l_ost_idx)] =
+ le64_to_cpu(lmm->lmm_objects[i].l_object_id);
+ }
+}
+
+/* Must be called with i_sem held */
+static int mds_create_objects(struct ptlrpc_request *req, int offset,
+ struct mds_update_record *rec,
+ struct mds_obd *mds, struct obd_device *obd,
+ struct inode *inode, void **handle, obd_id **ids)
+{
+ struct obdo *oa;
+ struct obd_trans_info oti = { 0 };
+ struct mds_body *body;
+ struct lov_stripe_md *lsm = NULL;
+ struct lov_mds_md *lmm = NULL;
+ void *lmm_buf;
+ int rc, lmm_bufsize, lmm_size;
+ ENTRY;
+
+ if (rec->ur_flags & MDS_OPEN_DELAY_CREATE ||
+ !(rec->ur_flags & FMODE_WRITE))
+ RETURN(0);
+
+ body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body));
+
+ if (!S_ISREG(inode->i_mode))
+ RETURN(0);
+ if (body->valid & OBD_MD_FLEASIZE)
+ RETURN(0);
+
+ OBD_ALLOC(*ids, mds->mds_lov_desc.ld_tgt_count * sizeof(**ids));
+ if (*ids == NULL)
+ RETURN(-ENOMEM);
+ oti.oti_objid = *ids;
+
+ if (*handle == NULL)
+ *handle = fsfilt_start(obd, inode, FSFILT_OP_CREATE, NULL);
+ if (IS_ERR(*handle)) {
+ rc = PTR_ERR(*handle);
+ *handle = NULL;
+ GOTO(out_ids, rc);
+ }
+
+ /* replay case */
+ if(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ LASSERT (rec->ur_fid2->id);
+ body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
+ lmm_size = rec->ur_eadatalen;
+ lmm = rec->ur_eadata;
+ LASSERT(lmm);
+
+ mds_objids_from_lmm(*ids, lmm, &mds->mds_lov_desc);
+
+ lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
+ lmm_bufsize = req->rq_repmsg->buflens[offset];
+ LASSERT(lmm_buf);
+ LASSERT(lmm_bufsize >= lmm_size);
+ memcpy(lmm_buf, lmm, lmm_size);
+ rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size);
+ if (rc)
+ CERROR("open replay failed to set md:%d\n", rc);
+ RETURN(0);
+ }
+
+
+ if (OBD_FAIL_CHECK_ONCE(OBD_FAIL_MDS_ALLOC_OBDO))
+ GOTO(out_ids, rc = -ENOMEM);
+
+ oa = obdo_alloc();
+ if (oa == NULL)
+ GOTO(out_ids, rc = -ENOMEM);
+ oa->o_mode = S_IFREG | 0600;
+ oa->o_id = inode->i_ino;
+ oa->o_generation = inode->i_generation;
+ oa->o_uid = 0; /* must have 0 uid / gid on OST */
+ oa->o_gid = 0;
+ oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
+ OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID;
+ oa->o_size = 0;
+
+ obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|OBD_MD_FLMTIME|
+ OBD_MD_FLCTIME);
+
+ if (!(rec->ur_flags & MDS_OPEN_HAS_OBJS)) {
+ /* check if things like lstripe/lfs stripe are sending us the ea */
+ if (rec->ur_flags & MDS_OPEN_HAS_EA) {
+ rc = obd_iocontrol(OBD_IOC_LOV_SETSTRIPE,
+ mds->mds_osc_exp,
+ 0, &lsm, rec->ur_eadata);
+ if (rc)
+ GOTO(out_oa, rc);
+ }
+ rc = obd_create(mds->mds_osc_exp, oa, &lsm, &oti);
+ if (rc) {
+ int level = D_ERROR;
+ if (rc == -ENOSPC)
+ level = D_INODE;
+ CDEBUG(level, "error creating objects for "
+ "inode %lu: rc = %d\n",
+ inode->i_ino, rc);
+ if (rc > 0) {
+ CERROR("obd_create returned invalid "
+ "rc %d\n", rc);
+ rc = -EIO;
+ }
+ GOTO(out_oa, rc);
+ }
+ } else {
+ rc = obd_iocontrol(OBD_IOC_LOV_SETEA, mds->mds_osc_exp,
+ 0, &lsm, rec->ur_eadata);
+ if (rc) {
+ GOTO(out_oa, rc);
+ }
+ lsm->lsm_object_id = oa->o_id;
+ }
+ if (inode->i_size) {
+ oa->o_size = inode->i_size;
+ obdo_from_inode(oa, inode, OBD_MD_FLTYPE|OBD_MD_FLATIME|
+ OBD_MD_FLMTIME| OBD_MD_FLCTIME| OBD_MD_FLSIZE);
+ rc = obd_setattr(mds->mds_osc_exp, oa, lsm, &oti);
+ if (rc) {
+ CERROR("error setting attrs for inode %lu: rc %d\n",
+ inode->i_ino, rc);
+ if (rc > 0) {
+ CERROR("obd_setattr returned bad rc %d\n", rc);
+ rc = -EIO;
+ }
+ GOTO(out_oa, rc);
+ }
+ }
+
+ body->valid |= OBD_MD_FLBLKSZ | OBD_MD_FLEASIZE;
+ obdo_refresh_inode(inode, oa, OBD_MD_FLBLKSZ);
+
+ LASSERT(lsm && lsm->lsm_object_id);
+ lmm = NULL;
+ rc = obd_packmd(mds->mds_osc_exp, &lmm, lsm);
+ if (!rec->ur_fid2->id)
+ obd_free_memmd(mds->mds_osc_exp, &lsm);
+ LASSERT(rc >= 0);
+ lmm_size = rc;
+ body->eadatasize = rc;
+ rc = fsfilt_set_md(obd, inode, *handle, lmm, lmm_size);
+ lmm_buf = lustre_msg_buf(req->rq_repmsg, offset, 0);
+ lmm_bufsize = req->rq_repmsg->buflens[offset];
+ LASSERT(lmm_buf);
+ LASSERT(lmm_bufsize >= lmm_size);
+
+ memcpy(lmm_buf, lmm, lmm_size);
+ obd_free_diskmd(mds->mds_osc_exp, &lmm);
+ out_oa:
+ oti_free_cookies(&oti);
+ obdo_free(oa);
+ out_ids:
+ if (rc) {
+ OBD_FREE(*ids, mds->mds_lov_desc.ld_tgt_count * sizeof(**ids));
+ *ids = NULL;
+ }
+ RETURN(rc);
+}
+
+static void reconstruct_open(struct mds_update_record *rec, int offset,
+ struct ptlrpc_request *req,
+ struct lustre_handle *child_lockh)
{
- struct ptlrpc_request *oldreq = req->rq_export->exp_outstanding_reply;
struct mds_export_data *med = &req->rq_export->exp_mds_data;
struct mds_client_data *mcd = med->med_mcd;
struct mds_obd *mds = mds_req2mds(req);
body = lustre_msg_buf(req->rq_repmsg, 1, sizeof (*body));
/* copy rc, transno and disp; steal locks */
- req->rq_transno = mcd->mcd_last_transno;
- req->rq_status = mcd->mcd_last_result;
+ mds_req_from_mcd(req, mcd);
intent_set_disposition(rep, mcd->mcd_last_data);
- if (oldreq)
- mds_steal_ack_locks(req->rq_export, req);
-
/* Only replay if create or open actually happened. */
if (!intent_disposition(rep, DISP_OPEN_CREATE | DISP_OPEN_OPEN) ) {
EXIT;
mds_pack_inode2body(body, child->d_inode);
if (S_ISREG(child->d_inode->i_mode)) {
rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
- child->d_inode);
+ child->d_inode, 1);
if (rc)
LASSERT(rc == req->rq_status);
* exclusively, we can tell we failed because the file already existed.
*/
if (req->rq_status == -EEXIST &&
- ((rec->ur_flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))) {
+ ((rec->ur_flags & (MDS_OPEN_CREAT | MDS_OPEN_EXCL)) ==
+ (MDS_OPEN_CREAT | MDS_OPEN_EXCL))) {
GOTO(out_dput, 0);
}
mfd = NULL;
}
- if (oldreq) {
- /* if we're not recovering, it had better be found */
- LASSERT(mfd);
- } else if (mfd == NULL) {
+#warning "XXX fixme"
+ /* Here it used to LASSERT(mfd) if exp_outstanding_reply != NULL.
+ * Now that exp_outstanding_reply is a list, it's just using mfd != NULL
+ * to detect a re-open */
+ if (mfd == NULL) {
mntget(mds->mds_vfsmnt);
CERROR("Re-opened file \n");
mfd = mds_dentry_open(child, mds->mds_vfsmnt,
- rec->ur_flags & ~(O_DIRECT | O_TRUNC), req);
+ rec->ur_flags & ~MDS_OPEN_TRUNC, req);
if (!mfd) {
CERROR("mds: out of memory\n");
GOTO(out_dput, req->rq_status = -ENOMEM);
put_child = 0;
}
- body->handle.cookie = mfd->mfd_handle.h_cookie;
-
out_dput:
if (put_child)
l_dput(child);
EXIT;
}
-int mds_pin(struct ptlrpc_request *req)
+/* do NOT or the MAY_*'s, you'll get the weakest */
+static int accmode(int flags)
+{
+ int res = 0;
+
+ if (flags & FMODE_READ)
+ res = MAY_READ;
+ if (flags & (FMODE_WRITE|MDS_OPEN_TRUNC))
+ res |= MAY_WRITE;
+ if (flags & FMODE_EXEC)
+ res = MAY_EXEC;
+ return res;
+}
+
+/* Handles object creation, actual opening, and I/O epoch */
+static int mds_finish_open(struct ptlrpc_request *req, struct dentry *dchild,
+ struct mds_body *body, int flags, void **handle,
+ struct mds_update_record *rec,struct ldlm_reply *rep)
{
struct mds_obd *mds = mds_req2mds(req);
- struct inode *pending_dir = mds->mds_pending_dir->d_inode;
+ struct obd_device *obd = req->rq_export->exp_obd;
struct mds_file_data *mfd = NULL;
- struct mds_body *body;
+ obd_id *ids = NULL; /* object IDs created */
+ int rc = 0;
+ ENTRY;
+
+ /* atomically create objects if necessary */
+ down(&dchild->d_inode->i_sem);
+ if (S_ISREG(dchild->d_inode->i_mode) &&
+ !(body->valid & OBD_MD_FLEASIZE)) {
+ rc = mds_pack_md(obd, req->rq_repmsg, 2, body,
+ dchild->d_inode, 0);
+ if (rc) {
+ up(&dchild->d_inode->i_sem);
+ RETURN(rc);
+ }
+ }
+ if (rec != NULL) {
+ /* no EA: create objects */
+ rc = mds_create_objects(req, 2, rec, mds, obd,
+ dchild->d_inode, handle, &ids);
+ if (rc) {
+ CERROR("mds_create_objects: rc = %d\n", rc);
+ up(&dchild->d_inode->i_sem);
+ RETURN(rc);
+ }
+ }
+ /* If the inode has EA data, then OSTs hold size, mtime */
+ if (S_ISREG(dchild->d_inode->i_mode) &&
+ !(body->valid & OBD_MD_FLEASIZE)) {
+ body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
+ OBD_MD_FLATIME | OBD_MD_FLMTIME);
+ }
+ up(&dchild->d_inode->i_sem);
+
+ intent_set_disposition(rep, DISP_OPEN_OPEN);
+ mfd = mds_dentry_open(dchild, mds->mds_vfsmnt, flags, req);
+ if (IS_ERR(mfd))
+ RETURN(PTR_ERR(mfd));
+
+ CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
+ mfd->mfd_handle.h_cookie);
+ if (ids != NULL) {
+ mds_lov_update_objids(obd, ids);
+ OBD_FREE(ids, sizeof(*ids) * mds->mds_lov_desc.ld_tgt_count);
+ }
+ //if (rc)
+ // mds_mfd_destroy(mfd);
+ RETURN(rc);
+}
+
+static int mds_open_by_fid(struct ptlrpc_request *req, struct ll_fid *fid,
+ struct mds_body *body, int flags,
+ struct mds_update_record *rec,struct ldlm_reply *rep)
+{
+ struct mds_obd *mds = mds_req2mds(req);
+ struct inode *pending_dir = mds->mds_pending_dir->d_inode;
struct dentry *dchild;
- struct obd_run_ctxt saved;
char fidname[LL_FID_NAMELEN];
- int fidlen = 0, rc, cleanup_phase = 0, size = sizeof(*body);
+ int fidlen = 0, rc;
+ void *handle = NULL;
ENTRY;
- body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
-
down(&pending_dir->i_sem);
- fidlen = ll_fid2str(fidname, body->fid1.id, body->fid1.generation);
+ fidlen = ll_fid2str(fidname, fid->id, fid->generation);
dchild = lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
if (IS_ERR(dchild)) {
up(&pending_dir->i_sem);
rc = PTR_ERR(dchild);
- CERROR("error looking up %s in PENDING: rc = %d\n",
- fidname, rc);
+ CERROR("error looking up %s in PENDING: rc = %d\n",fidname, rc);
RETURN(rc);
}
- cleanup_phase = 2;
-
- if (dchild->d_inode) {
+ if (dchild->d_inode != NULL) {
up(&pending_dir->i_sem);
mds_inode_set_orphan(dchild->d_inode);
mds_pack_inode2fid(&body->fid1, dchild->d_inode);
mds_pack_inode2body(body, dchild->d_inode);
- GOTO(openit, rc = 0);
+ intent_set_disposition(rep, DISP_LOOKUP_EXECD);
+ intent_set_disposition(rep, DISP_LOOKUP_POS);
+ CWARN("Orphan %s found and opened in PENDING directory\n",
+ fidname);
+ goto open;
}
dput(dchild);
up(&pending_dir->i_sem);
/* We didn't find it in PENDING so it isn't an orphan. See
- * if it's a regular inode. */
- dchild = mds_fid2dentry(mds, &body->fid1, NULL);
- if (!IS_ERR(dchild)) {
- mds_pack_inode2fid(&body->fid1, dchild->d_inode);
- mds_pack_inode2body(body, dchild->d_inode);
- GOTO(openit, rc = 0);
- }
+ * if it was a regular inode that was previously created. */
+ dchild = mds_fid2dentry(mds, fid, NULL);
+ if (IS_ERR(dchild))
+ RETURN(PTR_ERR(dchild));
- /* We didn't find this inode on disk, but we're trying to pin it.
- * This should never happen. */
- CERROR("ENOENT during mds_pin for fid "LPU64"/%u\n", body->fid1.id,
- body->fid1.generation);
- RETURN(-ENOENT);
+ mds_pack_inode2fid(&body->fid1, dchild->d_inode);
+ mds_pack_inode2body(body, dchild->d_inode);
+ intent_set_disposition(rep, DISP_LOOKUP_EXECD);
+ intent_set_disposition(rep, DISP_LOOKUP_POS);
- openit:
- /* dentry_open does a dput(de) and mntput(mds->mds_vfsmnt) on error */
- mfd = mds_dentry_open(dchild, mds->mds_vfsmnt, body->flags, req);
- if (IS_ERR(mfd)) {
- dchild = NULL; /* prevent a double dput in cleanup phase 2 */
- GOTO(cleanup, rc = PTR_ERR(mfd));
- }
+ open:
+ rc = mds_finish_open(req, dchild, body, flags, &handle, rec, rep);
+ rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
+ req, rc, rep ? rep->lock_policy_res1 : 0);
+ /* XXX what do we do here if mds_finish_transno itself failed? */
- rc = lustre_pack_msg(1, &size, NULL, &req->rq_replen, &req->rq_repmsg);
- if (rc) {
- CERROR("out of memoryK\n");
- GOTO(cleanup, rc);
- }
- body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body));
+ l_dput(dchild);
+ RETURN(rc);
+}
- cleanup_phase = 4; /* mfd allocated */
- body->handle.cookie = mfd->mfd_handle.h_cookie;
- CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
- mfd->mfd_handle.h_cookie);
- GOTO(cleanup, rc = 0);
+int mds_pin(struct ptlrpc_request *req)
+{
+ struct obd_device *obd = req->rq_export->exp_obd;
+ struct mds_body *request_body, *reply_body;
+ struct obd_run_ctxt saved;
+ int rc, size = sizeof(*reply_body);
+ ENTRY;
- cleanup:
- push_ctxt(&saved, &mds->mds_ctxt, NULL);
- rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, NULL,
- req, rc, 0);
- pop_ctxt(&saved, &mds->mds_ctxt, NULL);
- /* XXX what do we do here if mds_finish_transno itself failed? */
- switch (cleanup_phase) {
- case 4:
- if (rc)
- mds_mfd_destroy(mfd);
- case 2:
- if (rc || S_ISLNK(dchild->d_inode->i_mode))
- l_dput(dchild);
- }
- return rc;
+ request_body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*request_body));
+
+ rc = lustre_pack_reply(req, 1, &size, NULL);
+ if (rc)
+ RETURN(rc);
+ reply_body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*reply_body));
+
+ push_ctxt(&saved, &obd->obd_ctxt, NULL);
+ rc = mds_open_by_fid(req, &request_body->fid1, reply_body,
+ request_body->flags, NULL, NULL);
+ pop_ctxt(&saved, &obd->obd_ctxt, NULL);
+
+ RETURN(rc);
+}
+
+/* Get a lock on the ino to sync with creation WRT inode reuse (bug 2029).
+ * If child_lockh is NULL we just get the lock as a barrier to wait for
+ * other holders of this lock, and drop it right away again. */
+int mds_lock_new_child(struct obd_device *obd, struct inode *inode,
+ struct lustre_handle *child_lockh)
+{
+ struct ldlm_res_id child_res_id = { .name = { inode->i_ino, 0, 1, 0 } };
+ struct lustre_handle lockh;
+ int lock_flags = 0;
+ int rc;
+
+ if (child_lockh == NULL)
+ child_lockh = &lockh;
+
+ rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace, child_res_id,
+ LDLM_PLAIN, NULL, LCK_EX, &lock_flags,
+ mds_blocking_ast, ldlm_completion_ast, NULL, NULL,
+ NULL, 0, NULL, child_lockh);
+ if (rc != ELDLM_OK)
+ CERROR("ldlm_cli_enqueue: %d\n", rc);
+ else if (child_lockh == &lockh)
+ ldlm_lock_decref(child_lockh, LCK_EX);
+
+ RETURN(rc);
}
int mds_open(struct mds_update_record *rec, int offset,
struct ptlrpc_request *req, struct lustre_handle *child_lockh)
{
/* XXX ALLOCATE _something_ - 464 bytes on stack here */
- static const char acc_table [] = {[O_RDONLY] MAY_READ,
- [O_WRONLY] MAY_WRITE,
- [O_RDWR] MAY_READ | MAY_WRITE};
- struct mds_obd *mds = mds_req2mds(req);
struct obd_device *obd = req->rq_export->exp_obd;
+ struct mds_obd *mds = mds_req2mds(req);
struct ldlm_reply *rep = NULL;
struct mds_body *body = NULL;
- struct dentry *dchild = NULL, *parent = NULL;
+ struct dentry *dchild = NULL, *dparent = NULL;
struct mds_export_data *med;
- struct mds_file_data *mfd = NULL;
- struct ldlm_res_id child_res_id = { .name = {0} };
struct lustre_handle parent_lockh;
- int rc = 0, parent_mode, child_mode = LCK_PR, lock_flags, created = 0;
- int cleanup_phase = 0, acc_mode;
+ int rc = 0, cleanup_phase = 0, acc_mode, created = 0;
+ int parent_mode = LCK_PR;
void *handle = NULL;
+ struct dentry_params dp;
ENTRY;
if (offset == 2) { /* intent */
/* Step 0: If we are passed a fid, then we assume the client already
* opened this file and is only replaying the RPC, so we open the
- * inode by fid (at some large expense in security).
- */
- if (rec->ur_fid2->id) {
- struct inode *pending_dir = mds->mds_pending_dir->d_inode;
- char fidname[LL_FID_NAMELEN];
- int fidlen = 0;
-
- down(&pending_dir->i_sem);
- fidlen = ll_fid2str(fidname, rec->ur_fid2->id,
- rec->ur_fid2->generation);
- dchild = lookup_one_len(fidname, mds->mds_pending_dir, fidlen);
- if (IS_ERR(dchild)) {
- up(&pending_dir->i_sem);
- rc = PTR_ERR(dchild);
- CERROR("error looking up %s in PENDING: rc = %d\n",
- fidname, rc);
+ * inode by fid (at some large expense in security). */
+ if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+ DEBUG_REQ(D_HA, req, "open replay, disp: "LPX64"\n",
+ rep->lock_policy_res1);
+
+ LASSERT(rec->ur_fid2->id);
+
+ rc = mds_open_by_fid(req, rec->ur_fid2, body, rec->ur_flags,
+ rec, rep);
+ if (rc != -ENOENT)
RETURN(rc);
- }
-
- if (dchild->d_inode) {
- up(&pending_dir->i_sem);
- mds_inode_set_orphan(dchild->d_inode);
- mds_pack_inode2fid(&body->fid1, dchild->d_inode);
- mds_pack_inode2body(body, dchild->d_inode);
- cleanup_phase = 2;
- GOTO(openit, rc = 0);
- }
- dput(dchild);
- up(&pending_dir->i_sem);
-
- /* We didn't find it in PENDING so it isn't an orphan. See
- * if it was a regular inode that was previously created.
- */
- dchild = mds_fid2dentry(mds, rec->ur_fid2, NULL);
- if (!IS_ERR(dchild)) {
- mds_pack_inode2fid(&body->fid1, dchild->d_inode);
- mds_pack_inode2body(body, dchild->d_inode);
- cleanup_phase = 2;
- GOTO(openit, rc = 0);
- }
-
/* We didn't find the correct inode on disk either, so we
- * need to re-create it via a regular replay. Do that below.
- */
- LASSERT(rec->ur_flags & O_CREAT);
+ * need to re-create it via a regular replay. */
+ LASSERT(rec->ur_flags & MDS_OPEN_CREAT);
+ } else {
+ LASSERT(!rec->ur_fid2->id);
}
+
LASSERT(offset == 2); /* If we got here, we must be called via intent */
med = &req->rq_export->exp_mds_data;
if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OPEN_PACK)) {
CERROR("test case OBD_FAIL_MDS_OPEN_PACK\n");
- req->rq_status = -ENOMEM;
RETURN(-ENOMEM);
}
- if ((rec->ur_flags & O_ACCMODE) >= sizeof (acc_table))
- RETURN(-EINVAL);
- acc_mode = acc_table[rec->ur_flags & O_ACCMODE];
- if ((rec->ur_flags & O_TRUNC) != 0)
- acc_mode |= MAY_WRITE;
+ acc_mode = accmode(rec->ur_flags);
/* Step 1: Find and lock the parent */
- intent_set_disposition(rep, DISP_LOOKUP_EXECD);
- parent_mode = (rec->ur_flags & O_CREAT) ? LCK_PW : LCK_PR;
- parent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, parent_mode,
- &parent_lockh);
- if (IS_ERR(parent)) {
- rc = PTR_ERR(parent);
+ if (rec->ur_flags & O_CREAT)
+ parent_mode = LCK_PW;
+ dparent = mds_fid2locked_dentry(obd, rec->ur_fid1, NULL, parent_mode,
+ &parent_lockh, rec->ur_name,
+ rec->ur_namelen - 1);
+ if (IS_ERR(dparent)) {
+ rc = PTR_ERR(dparent);
CERROR("parent lookup error %d\n", rc);
GOTO(cleanup, rc);
}
- LASSERT(parent->d_inode);
+ LASSERT(dparent->d_inode != NULL);
cleanup_phase = 1; /* parent dentry and lock */
/* Step 2: Lookup the child */
- dchild = ll_lookup_one_len(rec->ur_name, parent, rec->ur_namelen - 1);
- if (IS_ERR(dchild))
- GOTO(cleanup, rc = PTR_ERR(dchild));
+ dchild = ll_lookup_one_len(rec->ur_name, dparent, rec->ur_namelen - 1);
+ if (IS_ERR(dchild)) {
+ rc = PTR_ERR(dchild);
+ dchild = NULL; /* don't confuse mds_finish_transno() below */
+ GOTO(cleanup, rc);
+ }
cleanup_phase = 2; /* child dentry */
+ intent_set_disposition(rep, DISP_LOOKUP_EXECD);
if (dchild->d_inode)
intent_set_disposition(rep, DISP_LOOKUP_POS);
else
intent_set_disposition(rep, DISP_LOOKUP_NEG);
- /* Step 3: If the child was negative, and we're supposed to,
- * create it. */
- if (!dchild->d_inode) {
+ /*Step 3: If the child was negative, and we're supposed to, create it.*/
+ if (dchild->d_inode == NULL) {
unsigned long ino = rec->ur_fid2->id;
+ struct iattr iattr;
+ struct inode *inode;
- if (!(rec->ur_flags & O_CREAT)) {
+ if (!(rec->ur_flags & MDS_OPEN_CREAT)) {
/* It's negative and we weren't supposed to create it */
GOTO(cleanup, rc = -ENOENT);
}
intent_set_disposition(rep, DISP_OPEN_CREATE);
- handle = fsfilt_start(obd, parent->d_inode, FSFILT_OP_CREATE,
+ handle = fsfilt_start(obd, dparent->d_inode, FSFILT_OP_CREATE,
NULL);
if (IS_ERR(handle)) {
rc = PTR_ERR(handle);
handle = NULL;
GOTO(cleanup, rc);
}
- if (ino)
- dchild->d_fsdata = (void *)(unsigned long)ino;
+ dchild->d_fsdata = (void *) &dp;
+ dp.p_ptr = req;
+ dp.p_inum = ino;
- rc = vfs_create(parent->d_inode, dchild, rec->ur_mode);
+ rc = ll_vfs_create(dparent->d_inode, dchild, rec->ur_mode,NULL);
if (dchild->d_fsdata == (void *)(unsigned long)ino)
dchild->d_fsdata = NULL;
if (rc) {
CDEBUG(D_INODE, "error during create: %d\n", rc);
GOTO(cleanup, rc);
- } else {
- struct iattr iattr;
- struct inode *inode = dchild->d_inode;
-
- if (ino) {
- LASSERT(ino == inode->i_ino);
- /* Written as part of setattr */
- inode->i_generation = rec->ur_fid2->generation;
- CDEBUG(D_HA, "recreated ino %lu with gen %x\n",
- inode->i_ino, inode->i_generation);
- }
+ }
+ inode = dchild->d_inode;
+ if (ino) {
+ LASSERT(ino == inode->i_ino);
+ /* Written as part of setattr */
+ inode->i_generation = rec->ur_fid2->generation;
+ CDEBUG(D_HA, "recreated ino %lu with gen %u\n",
+ inode->i_ino, inode->i_generation);
+ }
- created = 1;
- LTIME_S(iattr.ia_atime) = rec->ur_time;
- LTIME_S(iattr.ia_ctime) = rec->ur_time;
- LTIME_S(iattr.ia_mtime) = rec->ur_time;
+ created = 1;
+ LTIME_S(iattr.ia_atime) = rec->ur_time;
+ LTIME_S(iattr.ia_ctime) = rec->ur_time;
+ LTIME_S(iattr.ia_mtime) = rec->ur_time;
- iattr.ia_uid = rec->ur_uid;
- if (parent->d_inode->i_mode & S_ISGID) {
- iattr.ia_gid = parent->d_inode->i_gid;
- } else
- iattr.ia_gid = rec->ur_gid;
+ iattr.ia_uid = rec->ur_fsuid;
+ if (dparent->d_inode->i_mode & S_ISGID)
+ iattr.ia_gid = dparent->d_inode->i_gid;
+ else
+ iattr.ia_gid = rec->ur_fsgid;
- iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
- ATTR_MTIME | ATTR_CTIME;
+ iattr.ia_valid = ATTR_UID | ATTR_GID | ATTR_ATIME |
+ ATTR_MTIME | ATTR_CTIME;
- rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
- if (rc) {
- CERROR("error on setattr: rc = %d\n", rc);
- /* XXX should we abort here in case of error? */
- }
- }
+ rc = fsfilt_setattr(obd, dchild, handle, &iattr, 0);
+ if (rc)
+ CERROR("error on child setattr: rc = %d\n", rc);
- child_mode = LCK_PW;
- acc_mode = 0; /* Don't check for permissions */
- }
+ iattr.ia_valid = ATTR_MTIME | ATTR_CTIME;
- LASSERT(!mds_inode_is_orphan(dchild->d_inode));
+ rc = fsfilt_setattr(obd, dparent, handle, &iattr, 0);
+ if (rc)
+ CERROR("error on parent setattr: rc = %d\n", rc);
- /* Step 4: It's positive, so lock the child */
- child_res_id.name[0] = dchild->d_inode->i_ino;
- child_res_id.name[1] = dchild->d_inode->i_generation;
- reacquire:
- lock_flags = 0;
- /* For the open(O_CREAT) case, this would technically be a lock
- * inversion (getting a VFS lock after starting a transaction),
- * but in that case we cannot possibly block on this lock because
- * we just created the child and also hold a write lock on the
- * parent, so nobody could be holding the lock yet.
- */
- rc = ldlm_cli_enqueue(NULL, NULL, obd->obd_namespace, NULL,
- child_res_id, LDLM_PLAIN, NULL, 0, child_mode,
- &lock_flags, ldlm_completion_ast,
- mds_blocking_ast, NULL, child_lockh);
- if (rc != ELDLM_OK) {
- CERROR("ldlm_cli_enqueue: %d\n", rc);
- GOTO(cleanup, rc = -EIO);
+ acc_mode = 0; /* Don't check for permissions */
}
- cleanup_phase = 3; /* child lock */
+ LASSERT(!mds_inode_is_orphan(dchild->d_inode));
mds_pack_inode2fid(&body->fid1, dchild->d_inode);
mds_pack_inode2body(body, dchild->d_inode);
if (S_ISREG(dchild->d_inode->i_mode)) {
/* Check permissions etc */
- rc = permission(dchild->d_inode, acc_mode);
+ rc = ll_permission(dchild->d_inode, acc_mode, NULL);
if (rc != 0)
GOTO(cleanup, rc);
/* An append-only file must be opened in append mode for
* writing */
if (IS_APPEND(dchild->d_inode) && (acc_mode & MAY_WRITE) != 0 &&
- ((rec->ur_flags & O_APPEND) == 0 ||
- (rec->ur_flags & O_TRUNC) != 0))
+ ((rec->ur_flags & MDS_OPEN_APPEND) == 0 ||
+ (rec->ur_flags & MDS_OPEN_TRUNC) != 0))
GOTO(cleanup, rc = -EPERM);
-
- rc = mds_pack_md(obd, req->rq_repmsg, 2, body, dchild->d_inode);
- if (rc)
- GOTO(cleanup, rc);
-
- /* If we have LOV EA data, the OST holds size, mtime */
- if (!(body->valid & OBD_MD_FLEASIZE))
- body->valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
- OBD_MD_FLATIME | OBD_MD_FLMTIME);
}
- if (!created && (rec->ur_flags & O_CREAT) &&
- (rec->ur_flags & O_EXCL)) {
+ if (!created && (rec->ur_flags & MDS_OPEN_CREAT) &&
+ (rec->ur_flags & MDS_OPEN_EXCL)) {
/* File already exists, we didn't just create it, and we
* were passed O_EXCL; err-or. */
GOTO(cleanup, rc = -EEXIST); // returns a lock to the client
}
- /* If we're opening a file without an EA for write, the client needs
- * a write lock. */
- if (S_ISREG(dchild->d_inode->i_mode) && (rec->ur_flags & O_ACCMODE) &&
- child_mode != LCK_PW && !(body->valid & OBD_MD_FLEASIZE)) {
- ldlm_lock_decref(child_lockh, child_mode);
- child_mode = LCK_PW;
- goto reacquire;
- }
-
/* if we are following a symlink, don't open */
if (S_ISLNK(dchild->d_inode->i_mode))
GOTO(cleanup, rc = 0);
- if ((rec->ur_flags & O_DIRECTORY) && !S_ISDIR(dchild->d_inode->i_mode))
+ if ((rec->ur_flags & MDS_OPEN_DIRECTORY) &&
+ !S_ISDIR(dchild->d_inode->i_mode))
GOTO(cleanup, rc = -ENOTDIR);
-
- /* Step 5: mds_open it */
- intent_set_disposition(rep, DISP_OPEN_OPEN);
- openit:
- /* dentry_open does a dput(de) and mntput(mds->mds_vfsmnt) on error */
- mfd = mds_dentry_open(dchild, mds->mds_vfsmnt,
- rec->ur_flags & ~(O_DIRECT | O_TRUNC), req);
- if (IS_ERR(mfd)) {
- dchild = NULL; /* prevent a double dput in cleanup phase 2 */
- GOTO(cleanup, rc = PTR_ERR(mfd));
+
+ if (S_ISDIR(dchild->d_inode->i_mode)) {
+ if (rec->ur_flags & MDS_OPEN_CREAT || rec->ur_flags & FMODE_WRITE) {
+ /*we are tryying to create or write a exist dir*/
+ GOTO(cleanup, rc = -EISDIR);
+ }
+ if (ll_permission(dchild->d_inode, acc_mode, NULL)) {
+ GOTO(cleanup, rc = -EACCES);
+ }
}
- cleanup_phase = 4; /* mfd allocated */
- body->handle.cookie = mfd->mfd_handle.h_cookie;
- CDEBUG(D_INODE, "mfd %p, cookie "LPX64"\n", mfd,
- mfd->mfd_handle.h_cookie);
- GOTO(cleanup, rc = 0); /* returns a lock to the client */
+ /* Step 5: mds_open it */
+ rc = mds_finish_open(req, dchild, body, rec->ur_flags, &handle, rec,
+ rep);
+ GOTO(cleanup, rc);
cleanup:
rc = mds_finish_transno(mds, dchild ? dchild->d_inode : NULL, handle,
- req, rc, rep->lock_policy_res1);
- /* XXX what do we do here if mds_finish_transno itself failed? */
+ req, rc, rep ? rep->lock_policy_res1 : 0);
+
switch (cleanup_phase) {
- case 4:
- if (rc && !S_ISLNK(dchild->d_inode->i_mode))
- mds_mfd_destroy(mfd);
- case 3:
- /* This is the same logic as in the IT_OPEN part of
- * ldlm_intent_policy: if we found the dentry, or we tried to
- * open it (meaning that we created, if it wasn't found), then
- * we return the lock to the caller and client. */
- if (intent_disposition(rep, DISP_LOOKUP_NEG) &&
- !intent_disposition(rep, DISP_OPEN_OPEN))
- ldlm_lock_decref(child_lockh, child_mode);
case 2:
- if (rc || S_ISLNK(dchild->d_inode->i_mode))
- l_dput(dchild);
- case 1:
- if (parent) {
- l_dput(parent);
- if (rc) {
- ldlm_lock_decref(&parent_lockh, parent_mode);
- } else {
- memcpy(&req->rq_ack_locks[0].lock,&parent_lockh,
- sizeof(parent_lockh));
- req->rq_ack_locks[0].mode = parent_mode;
+ if (rc && created) {
+ int err = vfs_unlink(dparent->d_inode, dchild);
+ if (err) {
+ CERROR("unlink(%*s) in error path: %d\n",
+ dchild->d_name.len, dchild->d_name.name,
+ err);
}
+ } else if (created) {
+ mds_lock_new_child(obd, dchild->d_inode, NULL);
+ }
+ l_dput(dchild);
+ case 1:
+ if (dparent == NULL)
+ break;
+
+ l_dput(dparent);
+ if (rc)
+ ldlm_lock_decref(&parent_lockh, parent_mode);
+ else
+ ptlrpc_save_lock (req, &parent_lockh, parent_mode);
+ }
+ if (rc == 0)
+ atomic_inc(&mds->mds_open_count);
+ RETURN(rc);
+}
+
+/* Close a "file descriptor" and possibly unlink an orphan from the
+ * PENDING directory.
+ *
+ * If we are being called from mds_disconnect() because the client has
+ * disappeared, then req == NULL and we do not update last_rcvd because
+ * there is nothing that could be recovered by the client at this stage
+ * (it will not even _have_ an entry in last_rcvd anymore).
+ *
+ * Returns EAGAIN if the client needs to get more data and re-close. */
+int mds_mfd_close(struct ptlrpc_request *req, struct obd_device *obd,
+ struct mds_file_data *mfd, int unlink_orphan)
+{
+ struct inode *inode = mfd->mfd_dentry->d_inode;
+ char fidname[LL_FID_NAMELEN];
+ int last_orphan, fidlen, rc = 0, cleanup_phase = 0;
+ struct dentry *pending_child = NULL;
+ struct mds_obd *mds = &obd->u.mds;
+ struct inode *pending_dir = mds->mds_pending_dir->d_inode;
+ void *handle = NULL;
+ struct mds_body *request_body = NULL, *reply_body = NULL;
+ struct dentry_params dp;
+ ENTRY;
+
+ if (req != NULL) {
+ request_body = lustre_msg_buf(req->rq_reqmsg, 0,
+ sizeof(*request_body));
+ reply_body = lustre_msg_buf(req->rq_repmsg, 0,
+ sizeof(*reply_body));
+ }
+
+ fidlen = ll_fid2str(fidname, inode->i_ino, inode->i_generation);
+
+ last_orphan = mds_open_orphan_dec_test(inode) &&
+ mds_inode_is_orphan(inode);
+
+ /* this is half of the actual "close" */
+ if (mfd->mfd_mode & FMODE_WRITE) {
+ rc = mds_put_write_access(mds, inode, request_body,
+ last_orphan && unlink_orphan);
+ } else if (mfd->mfd_mode & FMODE_EXEC) {
+ mds_allow_write_access(inode);
+ }
+
+ if (last_orphan && unlink_orphan) {
+ LASSERT(rc == 0); /* mds_put_write_access must have succeeded */
+
+ CDEBUG(D_HA, "destroying orphan object %s\n", fidname);
+
+ /* Sadly, there is no easy way to save pending_child from
+ * mds_reint_unlink() into mfd, so we need to re-lookup,
+ * but normally it will still be in the dcache. */
+ pending_dir = mds->mds_pending_dir->d_inode;
+ down(&pending_dir->i_sem);
+ cleanup_phase = 1; /* up(i_sem) when finished */
+ pending_child = lookup_one_len(fidname, mds->mds_pending_dir,
+ fidlen);
+ if (IS_ERR(pending_child))
+ GOTO(cleanup, rc = PTR_ERR(pending_child));
+ LASSERT(pending_child->d_inode != NULL);
+
+ cleanup_phase = 2; /* dput(pending_child) when finished */
+ handle = fsfilt_start(obd, pending_dir, FSFILT_OP_UNLINK_LOG,
+ NULL);
+ if (IS_ERR(handle)) {
+ rc = PTR_ERR(handle);
+ handle = NULL;
+ GOTO(cleanup, rc);
}
+
+ if (req != NULL &&
+ (reply_body->valid & OBD_MD_FLEASIZE) &&
+ mds_log_op_unlink(obd, pending_child->d_inode,
+ lustre_msg_buf(req->rq_repmsg, 1, 0),
+ req->rq_repmsg->buflens[1],
+ lustre_msg_buf(req->rq_repmsg, 2, 0),
+ req->rq_repmsg->buflens[2]) > 0) {
+ reply_body->valid |= OBD_MD_FLCOOKIE;
+ }
+
+ pending_child->d_fsdata = (void *) &dp;
+ dp.p_inum = 0;
+ dp.p_ptr = req;
+ if (S_ISDIR(pending_child->d_inode->i_mode))
+ rc = vfs_rmdir(pending_dir, pending_child);
+ else
+ rc = vfs_unlink(pending_dir, pending_child);
+ if (rc)
+ CERROR("error unlinking orphan %s: rc %d\n",fidname,rc);
+ } else if (mfd->mfd_mode & FMODE_WRITE && rc == 0) {
+ /* Update the on-disk attributes if this was the last write
+ * close, and all information was provided (i.e., rc == 0)
+ *
+ * XXX this should probably be abstracted with mds_reint_setattr
+ */
+#if 0
+ struct iattr iattr;
+
+ /* XXX can't set block count with fsfilt_setattr (!) */
+ iattr.ia_valid = ATTR_CTIME | ATTR_ATIME |
+ ATTR_MTIME | ATTR_SIZE;
+ iattr.ia_atime = request_body->atime;
+ iattr.ia_ctime = request_body->ctime;
+ iattr.ia_mtime = request_body->mtime;
+ iattr.ia_size = request_body->size;
+ /* iattr.ia_blocks = request_body->blocks */
+
+ handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
+ if (IS_ERR(handle))
+ GOTO(cleanup, rc = PTR_ERR(handle));
+ rc = fsfilt_setattr(obd, mfd->mfd_dentry, handle, &iattr, 0);
+ if (rc)
+ CERROR("error in setattr(%s): rc %d\n", fidname, rc);
+#endif
+ }
+ /* If other clients have this file open for write, rc will be > 0 */
+ if (rc > 0)
+ rc = 0;
+ l_dput(mfd->mfd_dentry);
+ mds_mfd_destroy(mfd);
+
+ cleanup:
+ atomic_dec(&mds->mds_open_count);
+ if (req) {
+ rc = mds_finish_transno(mds, pending_dir, handle, req, rc, 0);
+ } else if (handle) {
+ int err = fsfilt_commit(obd, pending_dir, handle, 0);
+ if (err) {
+ CERROR("error committing close: %d\n", err);
+ if (!rc)
+ rc = err;
+ }
+ }
+
+ switch (cleanup_phase) {
+ case 2:
+ dput(pending_child);
+ case 1:
+ up(&pending_dir->i_sem);
}
RETURN(rc);
}
+
+int mds_close(struct ptlrpc_request *req)
+{
+ struct mds_export_data *med = &req->rq_export->exp_mds_data;
+ struct obd_device *obd = req->rq_export->exp_obd;
+ struct mds_body *body;
+ struct mds_file_data *mfd;
+ struct obd_run_ctxt saved;
+ struct inode *inode;
+ int rc, repsize[3] = {sizeof(struct mds_body),
+ obd->u.mds.mds_max_mdsize,
+ obd->u.mds.mds_max_cookiesize};
+ ENTRY;
+
+ rc = lustre_pack_reply(req, 3, repsize, NULL);
+ if (rc) {
+ CERROR("lustre_pack_reply: rc = %d\n", rc);
+ req->rq_status = rc;
+ } else {
+ MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
+ }
+
+ body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_mds_body);
+ if (body == NULL) {
+ CERROR("Can't unpack body\n");
+ req->rq_status = -EFAULT;
+ RETURN(-EFAULT);
+ }
+
+ if (body->flags & MDS_BFLAG_UNCOMMITTED_WRITES)
+ /* do some stuff */ ;
+
+ mfd = mds_handle2mfd(&body->handle);
+ if (mfd == NULL) {
+ DEBUG_REQ(D_ERROR, req, "no handle for file close ino "LPD64
+ ": cookie "LPX64, body->fid1.id, body->handle.cookie);
+ req->rq_status = -ESTALE;
+ RETURN(-ESTALE);
+ }
+
+ inode = mfd->mfd_dentry->d_inode;
+ if (mds_inode_is_orphan(inode) && mds_open_orphan_count(inode) == 1) {
+ body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
+ LASSERT(body != NULL);
+
+ mds_pack_inode2fid(&body->fid1, inode);
+ mds_pack_inode2body(body, inode);
+ mds_pack_md(obd, req->rq_repmsg, 1, body, inode, 1);
+ }
+ spin_lock(&med->med_open_lock);
+ list_del(&mfd->mfd_list);
+ spin_unlock(&med->med_open_lock);
+
+ push_ctxt(&saved, &obd->obd_ctxt, NULL);
+ req->rq_status = mds_mfd_close(rc ? NULL : req, obd, mfd, 1);
+ pop_ctxt(&saved, &obd->obd_ctxt, NULL);
+
+ if (OBD_FAIL_CHECK(OBD_FAIL_MDS_CLOSE_PACK)) {
+ CERROR("test case OBD_FAIL_MDS_CLOSE_PACK\n");
+ req->rq_status = -ENOMEM;
+ mds_mfd_put(mfd);
+ RETURN(-ENOMEM);
+ }
+
+ mds_mfd_put(mfd);
+ RETURN(0);
+}
+
+int mds_done_writing(struct ptlrpc_request *req)
+{
+ struct mds_body *body;
+ int rc, size = sizeof(struct mds_body);
+ ENTRY;
+
+ MDS_CHECK_RESENT(req, mds_reconstruct_generic(req));
+
+ body = lustre_swab_reqbuf(req, 0, sizeof(*body), lustre_swab_mds_body);
+ if (body == NULL) {
+ CERROR("Can't unpack body\n");
+ req->rq_status = -EFAULT;
+ RETURN(-EFAULT);
+ }
+
+ rc = lustre_pack_reply(req, 1, &size, NULL);
+ if (rc) {
+ CERROR("lustre_pack_reply: rc = %d\n", rc);
+ req->rq_status = rc;
+ }
+
+ RETURN(0);
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff